I HAVE A 81 GMC , THIS HAD A ROUGH HARD SUSPENSION I CUT THE SPRINGS ABOUT 1 1/2 TURNS THIS LOWERED THE TRUCK ABOUT 3'' NOW FOR THE REAR I STRAIGHTEN OUT THE LEAF SPRINGS NOTE THE STRAIGHTER THIS THINGS ARE THE LOWER THE REAR WILL GET. SO I GET A 3'' AND 4'' WITH OUT BUYING ABSOLUTLY NOTHING. NOTE: AND THE RIDE FOR SOME REASON IS ALOT SMOOTHER THAN ORIGINAL. NOT BOUNCY NOR STIFF.

I ALSO WAS ABLE TO PUT 22'' WITH 285-35-22 WITHOUT SCRAPING THE INNER FENDERS.
Edited by: OKUMA111 at: 2/19/06 5:13 pm